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    <meta charset="UTF-8">
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    <title>Document</title>
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<body>
    <script>
        function add(a, b, c) {
            return a + b + c
        }
        console.log(add.length);
        const res = add(1, 2, 3) // 6
        function curry(fn) {
            return function judge(...arguments) {
                if (arguments.length === fn.length) return fn(...arguments)
                return function (...argument) {
                    return judge(...arguments, ...argument)
                }
            }
        }
        let addCurry = curry(add)
        const res2 = addCurry(1)(2)(3) // 6
        console.log(res2);
    </script>
</body>

</html>